setPlotAreaBg(bgColor1 [, bgColor2 [, altRings ]])

Sets alternating background colors for the polar plot area.

ChartDirector supports using two alternating background colors for the polar plot area. The colors can change on the radial direction, resulting in concentric circles, on an the angular direction, resulting in alternating sectors.

Argument	Default	Description
bgColor1	(Mandatory)	The first background color.
bgColor2	-1	The second background color. -1 means it is the same as the first background color.
altRings	true	A true value means the background colors alternate in the radial direction, resulting in concentric circles. A false value means the background colors alternates in the angular direction, resulting in alternating sectors.

None